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1 From the Department of Radiology, Hospital for Joint Diseases, NYU Medical Center, 305 E 17th St, New York, NY 10003 (Z.S.R.); the Department of Radiology, Maimonides Medical Center, Brooklyn, NY (J.B.); and the Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, Mass (J.T.B.). Presented as a refresher course at the 1999 RSNA scientific assembly. Received March 22, 2000; revision requested May 23 and received June 30; accepted July 5. Address correspondence to Z.S.R. (e-mail: zehava.rosenberg@usa.net).
Magnetic resonance (MR) imaging has opened new horizons in the diagnosis and treatment of many musculoskeletal diseases of the ankle and foot. It demonstrates abnormalities in the bones and soft tissues before they become evident at other imaging modalities. The exquisite soft-tissue contrast resolution, noninvasive nature, and multiplanar capabilities of MR imaging make it especially valuable for the detection and assessment of a variety of soft-tissue disorders of the ligaments (eg, sprain), tendons (tendinosis, peritendinosis, tenosynovitis, entrapment, rupture, dislocation), and other soft-tissue structures (eg, anterolateral impingement syndrome, sinus tarsi syndrome, compressive neuropathies [eg, tarsal tunnel syndrome, Morton neuroma], synovial disorders). MR imaging has also been shown to be highly sensitive in the detection and staging of a number of musculoskeletal infections including cellulitis, soft-tissue abscesses, and osteomyelitis. In addition, MR imaging is excellent for the early detection and assessment of a number of osseous abnormalities such as bone contusions, stress and insufficiency fractures, osteochondral fractures, osteonecrosis, and transient bone marrow edema. MR imaging is increasingly being recognized as the modality of choice for assessment of pathologic conditions of the ankle and foot.
Index Terms: Ankle, anatomy, 46.92 Ankle, fractures, 46.41 Ankle, injuries, 46.41, 46.48 Ankle, MR, 46.1214 Foot, anatomy, 46.92 Foot, fractures, 46.41 Foot, injuries, 46.48 Foot, MR, 46.1214
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